springintegration sftp gateway move file and then process

@Configuration

@EnableIntegration

public class SftpIntegrationConfig {

@Bean

public SessionFactory<LsEntry> sftpSessionFactory() {

DefaultSftpSessionFactory factory = new DefaultSftpSessionFactory(true);

factory.setHost("sftp.server.com");

factory.setPort(22);

factory.setUser("username");

factory.setPassword("password");

factory.setAllowUnknownKeys(true);

return new CachingSessionFactory<>(factory);

}

@Bean

public IntegrationFlow sftpInboundFlow() {

return IntegrationFlows.from(

Sftp.inboundAdapter(sftpSessionFactory())

.preserveTimestamp(true)

.remoteDirectory("remote/dir")

.localDirectory(new File("local/dir"))

.autoCreateLocalDirectory(true)

.localFilter(new AcceptOnceFileListFilter<>())

.deleteRemoteFiles(false), // Set to false to keep the remote file after downloading

e -> e.poller(Pollers.fixedDelay(5000)))

.transform(Transformers.fileToString())

.channel("fileInputChannel") // Send the file content to the fileInputChannel

.get();

}

@Bean

public IntegrationFlow moveAndProcessFlow() {

return IntegrationFlows.from("fileInputChannel")

.handle(Sftp.outboundGateway(sftpSessionFactory(),

Command.MV, "headers['file_remoteDirectory'] + '/' + headers['file_remoteFile']")

.renameExpression("headers['file_rename_to']")

.options(Option.RECURSIVE)

.temporaryFileSuffix(".writing"),

e -> e.advice(expressionAdvice()))

.handle("fileProcessor", "processFile")

.get();

}

@Bean

public ExpressionEvaluatingRequestHandlerAdvice expressionAdvice() {

ExpressionEvaluatingRequestHandlerAdvice advice = new ExpressionEvaluatingRequestHandlerAdvice();

advice.setSuccessChannelName("moveAndProcessChannel");

advice.setOnSuccessExpressionString("headers['file_originalFile'] + ' was successfully moved and processed'");

return advice;

}

@Bean

public MessageChannel fileInputChannel() {

return new DirectChannel();

}

@Bean

public MessageChannel moveAndProcessChannel() {

return new DirectChannel();

}

@Bean

public MessageHandler fileProcessor() {

return new MessageHandler() {

@Override

public void handleMessage(Message<?> message) throws MessagingException {

String fileContent = (String) message.getPayload();

System.out.println("Processing file content: " + fileContent);

// Process the file content here

}

};

}

}

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